package com.zr0726.news.web.admin;

import com.zr0726.news.po.Type;
import com.zr0726.news.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;

@Controller
@RequestMapping("/admin")
public class TypeController {
    @Autowired
    private TypeService typeService;

    @RequestMapping("/types")
    public String type(@PageableDefault(size = 3,sort = {"id"},direction = Sort.Direction.DESC)
                       Pageable pageable, Model model){
        model.addAttribute("page",typeService.listType(pageable));
       return "admin/types";
    }

    @GetMapping("/types/input")
    public String input(Model model){
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }

    @PostMapping("/types/add")
    public String add(@Valid Type type, BindingResult result, RedirectAttributes attributes){
        Type type1=typeService.getTypeByName(type.getName());
        if(type1!=null){
            result.rejectValue("name","nameError","不能添加重复分类");
        }
        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type type2=typeService.saveType(type);
        if(type2==null){
            attributes.addFlashAttribute("message","新增失败");
        }else{
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/types";
    }

    @RequestMapping("/types/{id}/delete")
    public String delete(@PathVariable long id,RedirectAttributes attributes){
        typeService.delete(id);
        attributes.addFlashAttribute("message","删除成功");
        return "redirect:/admin/types";
    }

    @RequestMapping("/types/{id}/toUpdate")
    public String toUpdate(@PathVariable Long id,Model model){
        model.addAttribute("type",typeService.getType(id));
        return "admin/types-input";
    }

    @RequestMapping("/types/update/{id}")
    public String update(@Valid Type type,BindingResult result,@PathVariable Long id,RedirectAttributes attributes) {
        Type type1 = typeService.getTypeByName(type.getName());
        if (type1 != null) {
            result.rejectValue("name", "nameError", "不能添加重复分类");
        }
        if (result.hasErrors()) {
            return "admin/types-input";
        }
        Type type2 = typeService.updateType(id, type);
        if (type2 != null) {
            attributes.addFlashAttribute("message", "更新成功");
        } else {
            attributes.addFlashAttribute("message", "更新失败");
        }
        return "redirect:/admin/types";
    }

}
